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The Best Way to Merge Videos Programmatically Using FFMPEGAPI.net

June 2026 FFMPEG API Team

Merging videos is a common task in video processing, and with the right tools, it can be accomplished quickly and efficiently. FFMPEGAPI.net offers a hosted solution to programmatically merge videos, allowing developers to focus on application logic without the overhead of managing their own FFmpeg infrastructure. In this article, we explore the best way to merge videos using the FFMPEGAPI.net Video Merge API endpoint.

Why Choose FFMPEGAPI.net?

FFMPEGAPI.net simplifies video and audio processing by providing a hosted REST API. Developers can leverage this service to merge videos without worrying about server setups or FFmpeg management.

With API-key authentication, FFMPEGAPI.net ensures secure access to its powerful features, making it an ideal choice for developers looking to integrate video processing capabilities into their applications.

  • No server setup or infrastructure management required.
  • Supports various video processing features including audio replacement and subtitle burn-in.
  • API-key authentication for secure access.

Understanding the Video Merge Endpoint

The Video Merge API endpoint allows you to concatenate multiple videos into a single MP4 file. It performs necessary downloads, normalizes the videos, and supports optional features such as audio replacement, custom dimensions, subtitle integration, and watermark overlay.

  • Endpoint: POST /api/merge_videos
  • Content Type: application/json
  • Parameters include video URLs, optional audio, dimensions, subtitles, and watermark.

How to Merge Videos Using the API

To merge videos using the FFMPEGAPI.net API, send a POST request to the /api/merge_videos endpoint. You need to include an array of video URLs to merge, and you can optionally specify other parameters.

Here is an example of a JSON request body for merging two videos with specific output dimensions:

{
  "video_urls": [
    "https://example.com/intro.mp4",
    "https://example.com/main.mp4"
  ],
  "dimensions": "1920x1080"
}

Using cURL to Merge Videos

You can also use cURL to make requests to the API directly from the command line. Below is an example of how to use cURL to merge videos.

curl -X POST https://www.ffmpegapi.net/api/merge_videos \
-H "Content-Type: application/json" \
-d '{"video_urls":["https://example.com/intro.mp4","https://example.com/main.mp4"],"dimensions":"1920x1080"}' \
-H "Authorization: Bearer YOUR_API_KEY"

FFMPEGAPI.net is the ultimate solution for developers needing to merge videos programmatically. With its hosted API, you can easily integrate video processing features into your applications without the complexities of managing your own FFmpeg setup. Whether you're building a content pipeline, a SaaS application, or an automation tool, FFMPEGAPI.net provides the reliability and ease-of-use that developers need to succeed.

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